.footer {
  background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
  color: white;
  margin-top: auto;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 30px;
}

.footer-section h3 {
  color: #3498db;
  margin-bottom: 15px;
  font-size: 24px;
  font-weight: 600;
}

.footer-section h4 {
  color: #ecf0f1;
  margin-bottom: 15px;
  font-size: 18px;
  font-weight: 500;
}

.footer-section p {
  color: #bdc3c7;
  line-height: 1.6;
  margin-bottom: 15px;
}

.footer-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-section ul li {
  color: #bdc3c7;
  padding: 5px 0;
  position: relative;
  padding-left: 20px;
}

.footer-section ul li::before {
  content: "▸";
  color: #3498db;
  position: absolute;
  left: 0;
}

.footer-bottom {
  border-top: 1px solid #34495e;
  padding-top: 20px;
  text-align: center;
}

.footer-bottom p {
  color: #95a5a6;
  margin: 0;
  font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .footer-container {
    padding: 30px 20px 15px;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-bottom: 20px;
  }
  
  .footer-section h3 {
    font-size: 20px;
  }
  
  .footer-section h4 {
    font-size: 16px;
  }
} 